Irrlicht Engine

Hello everybody.
I have a doubt. Which is the orden of the axis' rotations in this method?

setPosition(vector3df(0,0,0)) place the center of the mesh at (0,0,0) ?

Hello.
I have been looking for threads at Irrlicht, but I found nothing.
Has Irrlicht a class to manage threads?

Hello.

I'm working whith Irrlicht .Net with c#.
When I work whith a console application irrlicht create a window to render.

Now when I work whith a windows application I want that Irrlicht do not create a window, I want to render at the Form1 of windows application.

Is that possible?